Atari 800XL - Connecting Your Computer to the TV Switch-Box

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ouryj
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RDY Input
MJT
Phjs*
1 OocV
h
Initirvjpr R«^uc5T
tS9
NC
Non
Mjsfcibic Input
^:=J
N.a
.)V POWER
^
Af^dfc-u
SuS
A#
Address Bus
Al
Acfdrco
Bus
AS
AddrriS
Bus
AJ
Addrcw Bus
A*
Addrru Bus
AS
AddrfU Bus
*4
AddrrtJ
Bus
Jtf
Address Bus
A<
Addrc^ Bus
A#
4
Addre^ Bus
All
Address Bus
AU
—
n
3
A£S Rr9«t
t9
3
H
P^aie ?
Clock
«
1
3
i»
Set
Overflow
«'
3
H«*
PT^A
%c Clock
*
,
3
*v»
R^ad
Wrnc
If
3
==^
'
HALT
Input
1*
3
N-O
3
m
Djiia
Bui
11
3
-
Catx But
FIED) »
3-
|^^V^
Data Bus
-
3
l«
DaU Bus
=»
3
»
DatA Bui
^
3
-
Data But
sy
3
Di
Data Bui
m
3
or
Data
Bui
a
3
JOS Address
Bui
»
3
«»
Address Bus
9
3
MS Address Bui
a
3
AO
Address
Bui
a
3
^
Ground
Figu-e 1-3-
6502C
CPU Pin
Assignments
Alphanumeric Television Interface
ControHer
(ANTIC)
The ANTIC Display Processor is a
cmtofn display
microprorr-wc
with an
instruction
set customized for grapliics
gcT>eration, It
also
has
the
ability to
control the
ADDRESS & DATA bus and RAM
Refresh-
Figure M
is an illustration of the
ANTIC
Display
Processor
pin
assignrrw-nts-
8 00 XL Computer
Field
Service Manual
1-5